Created
February 20, 2014 03:53
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Ember Resizable Image Component http://jsbin.com/ucanam/3882/edit
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| .sized-container{ | |
| position: relative; | |
| } | |
| .element-resize{ | |
| position: absolute; | |
| bottom: 0px; | |
| right: 0px; | |
| width: 20px; | |
| height: 20px; | |
| background-color: black; | |
| cursor: pointer; | |
| } |
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| App = Ember.Application.create({}); | |
| App.SizedContainerComponent = Ember.Component.extend({ | |
| classNames: ['sized-container'], | |
| attributeBindings: ['style'], | |
| width: null, //set in template | |
| height: null, //set in template | |
| style: function(){ | |
| var width = this.get('width'), | |
| height = this.get('height'); | |
| return "width:"+width+"px;height:"+height+"px;"; | |
| }.property('width', 'height') | |
| }); | |
| App.ResizeElementComponent = Ember.Component.extend({ | |
| isResizing: false, | |
| classNames: ['element-resize'], | |
| aspectRatio: function(){ | |
| return this.get('width') / this.get('height'); | |
| }.property('width', 'height'), | |
| mouseDownHandler: function(e){ | |
| var self = this; | |
| if (e.target === this.$()[0]){ | |
| e.preventDefault(); | |
| Ember.run(function(){ | |
| self.setProperties({ | |
| isResizing: true, | |
| resizeX: e.pageX, | |
| resizeY: e.pageY | |
| }); | |
| }); | |
| } | |
| }, | |
| mouseUpHandler: function(e){ | |
| var self = this; | |
| Ember.run(function(){ | |
| self.set('isResizing', false); | |
| }); | |
| }, | |
| mouseMoveHandler: function(e){ | |
| var self = this; | |
| if (e.target === this.$()[0]){ | |
| e.preventDefault(); | |
| } | |
| if (this.get('isResizing')){ | |
| var resizeX = this.get('resizeX'), | |
| resizeY = this.get('resizeY'), | |
| offsetX = resizeX - e.pageX, | |
| offsetY = resizeY - e.pageY, | |
| width = this.get('width'), | |
| height = this.get('height'); | |
| var newWidth, newHeight; | |
| if (offsetX){ | |
| newWidth = width - offsetX; | |
| newHeight = newWidth / this.get('aspectRatio'); | |
| }else{ | |
| newHeight = height - offsetY; | |
| newWidth = newHeight * this.get('aspectRatio'); | |
| } | |
| Ember.run(function(){ | |
| self.setProperties({ | |
| width: newWidth, | |
| height: newHeight, | |
| resizeX: e.pageX, | |
| resizeY: e.pageY | |
| }); | |
| }); | |
| } | |
| }, | |
| didInsertElement: function(){ | |
| this._boundMouseDownHandler = this.mouseDownHandler.bind(this); | |
| this._boundMouseMoveHandler = this.mouseMoveHandler.bind(this); | |
| this._boundMouseUpHandler = this.mouseUpHandler.bind(this); | |
| $(document).on('mousedown', this._boundMouseDownHandler); | |
| $(document).on('mousemove', this._boundMouseMoveHandler); | |
| $(document).on('mouseup', this._boundMouseUpHandler); | |
| }, | |
| willDestroyElement: function(){ | |
| $(document).off('mousedown', this._boundMouseDownHandler); | |
| $(document).off('mousemove', this._boundMouseMoveHandler); | |
| $(document).off('mouseup', this._boundMouseUpHandler); | |
| } | |
| }); |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset=utf-8 /> | |
| <title>JS Bin</title> | |
| <script src="http://code.jquery.com/jquery-2.0.2.js"></script> | |
| <script src="http://builds.emberjs.com/handlebars-1.0.0.js"></script> | |
| <script src="http://builds.emberjs.com/ember-latest.js"></script> | |
| </head> | |
| <body> | |
| <script type="text/x-handlebars" data-template-name="application"> | |
| {{outlet}} | |
| </script> | |
| <script type="text/x-handlebars" data-template-name="index"> | |
| <h2>Ember Resizable Image:</h2> | |
| {{#sized-container width=198 height=263}} | |
| <img src="http://emberjs.com/images/builds/canary.png" width="100%" height="100%"> | |
| {{resize-element width=view.width height=view.height}} | |
| {{/sized-container}} | |
| </script> | |
| </body> | |
| </html> | |
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